Document URL: https://docs.openshift.com/container-platform/4.9/logging/cluster-logging-upgrading.html

Section Number and Name: In the Prerequisites

Describe the issue: In the official openshift documentation under the prerequisites it is mentioned that "Your Elasticsearch and Kibana data is backed up." However there are no steps mentioned to achieve the same. Also, there is no official documentation available from Red Hat to backup Elasticsearch and Kibana data.

Suggestions for improvement: After checking our customer portal I have found one KCS solution(https://access.redhat.com/solutions/5794841) which has the steps documented. So the request is to either add this KCS as a hyperlink or include the steps in the official documentation. The KCS is well tested and might be helpful to the customer.

Additional information: The same information is mentioned in the previous version documentation. Hence I request you to kindly update the information in the previous versions as well.